First, jujube trees are more fruitful and have a direct relationship with "flowers." The management of necessary measures before and during flowering of jujube trees can effectively improve the fruit setting rate of jujube trees and increase the yield of jujube trees. 1, flowering fertilizer. In late April to early May, according to each jujube tree with urea 0.4-0.6 kg, 1.5-2 kg of superphosphate, 0.6 kg of potassium chloride, after pouring water to open a hole pouring facilities. It can also use 10-15 kilograms of decomposed human excrement and 4-6 kilograms of plant ash per jujube tree. 2, before the flower pests. In March, we excavated the Jujube pupa over the winter pupa, and used the grass rope poison ring to prevent the adult worms of Jujube and Jujube. In the middle and late April and late May, we sprayed 3000 times of pyrethroid pesticides once. 3, topping before flowering. Before flowering, jujube heads that do not have backbone branches, when there are 4-5 permanent secondary branches on the stems, leave 4 or 3 secondary branch toppings according to the strength of the growth. Due to the appearance of Zaotou is not the same, sooner or later, so picking the heart to be carried out in phases. 4, flowering girdling. The girdling during full flowering can temporarily stop the transportation of the nutrient produced by the leaves to meet the early development of flowering fruit set and young fruit. The specific method is to cut two times around the trunk, which is 10-20 cm high from the ground. The incision is 3-5 mm wide and reaches deep into the xylem and the phloem is taken out. It is required to peel without leaving residual skin and no hairs to heal. Afterwards, it should be carried out at an interval of 3-5 centimeters every year, and it should be peeled back to the main branch. The girdling should be due to trees and should not be used for saplings and weak trees. After girdling, apply insecticide and apply paper or plastic film to prevent evaporation. 5, flowering bee. According to the survey, flowering in the Zaoyuan Garden during the flowering period can increase fruit setting rate by about 1 time, and increase production by 20-30%. The closer the beehive is to the jujube tree, the higher the fruit set rate. 6, three flowering spray. One is water spray. When the relative humidity of the jujube tree is lower than 60% during the flowering period, the sprayer is used to evenly spray water on the jujube flowers, spray once every 6 days, and spray 3 times; second, spray fertilizer. In the early flowering stage and young fruit stage, the leaf surface can be sprayed with 0.3-0.5% urea and 0.1-0.3% potassium dihydrogen phosphate solution. Spraying should be done in cloudy weather, or in the morning and evening. The amount of fertilizer sprayed was the degree of wetting on the leaf surface. The third is the hormone. Blooming period sprays 10-15PPm naphthaleneacetate, or 5-10pm 2,4-D on strong trees. The use of naphthalene acetic acid 30-60PPm, or 2,4-D 30PPm twice (with intervals of 20 days), can effectively prevent its falling fruit. Spraying 0.2-0.3% borax or boric acid during flowering can also effectively increase fruit setting rate. Second, jujube tree pruning is equally important in summer. Summer jujube cut more in May - July. The main purpose of summer pruning is to suppress excessive growth of long jujube heads, reduce the consumption of nutrients that are not beneficial, regulate the flow of nutrition, improve lighting conditions, increase fruit setting rate, promote fruit development, and increase yield and quality. 1, wipe buds. For jujube that just germinated and has no use value, it should be erased from the base as soon as possible to save nutrients and facilitate ventilation. 2, topping. After sprouting leaves, it is possible to pick up the first branch, second branch, and jujube hanging from the jujube head to prevent it from growing longer in June, which will benefit the results of the year and cultivate a robust result. The degree of topping of jujube heads depends on the size and growth of the jujube head. Weak branches are generally heavy topping (leaving 2-4 secondary branches), Zhuangzhi light topping (leaving 4-7 secondary branches). The dwarf dense date garden can also be used for picking up the second branch and jujube hanging. The picking should be moderate, while the strong results are more than that year, but the area of ​​the affected results will increase, and a large number of jujube heads will sprout on the second branch the following year. When it is too light, the fruit setting rate is reduced and the quality is poor, resulting in a weak branch. 3, pull the sticks. It is usually conducted from May to July, so that the branches are evenly distributed and the crown is well ventilated and light-transmitting.